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Thread: 1996 k3500 timing issues

  1. #1
    Join Date
    Aug 2016
    Middle River Md.

    Default 1996 k3500 timing issues

    I am still having problems with this truck, I have replaced about everything and truck just starts up and idles. The service engine soon light and service throttle soon light are on. I have been trying for a year now to figure this out and am getting frustrated. I have thousands tided up in this thing now and don't know what to do anymore. I could really use some help!!! Thanks

  2. #2
    Join Date
    Feb 2007


    Have you tested or replaced the throttle position module? Your 96 model is in the years of bad ignition switches, which can cause various problems when it becomes faulty. My 95 had SES and throttle light for some time then 1st gear only, some days. A new ignition switch fixed it, it was a pain to fit, and was more than $100.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, new engine, 0 miles. 3.73 diff, 16 mpg
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, since 1992.

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